An infection could be causing the high white cell count and liver enzymes to be elevated; the liver in part is a "filter" for impurities and breaks them down. My girl Cody was also diagnosed with hip dysplasi when she was young. This often causes premature arthritis and degeneration of the joint. But, there are many treatments for this, and I have never heard of a young dog with hip dysplasia being put to sleep for it without a course of treatment. I wish you could get Jasper to a larger veterinary facility or teaching hospital!! It doesn't sound like it's time to give up on him!!